English verb conjugation
CAN UNNAIL

Regular verb: unnail - unnailed - unnailed

Affirmation

Simple form	V-ing form
I can unnail you can unnail he can unnail we can unnail you can unnail they can unnail	I can be unnailing you can be unnailing he can be unnailing we can be unnailing you can be unnailing they can be unnailing
Perfect	V-ing perfect
I can have unnailed you can have unnailed he can have unnailed we can have unnailed you can have unnailed they can have unnailed	I can have been unnailing you can have been unnailing he can have been unnailing we can have been unnailing you can have been unnailing they can have been unnailing

Negation

Simple form	V-ing form
I cannot unnail you cannot unnail he cannot unnail we cannot unnail you cannot unnail they cannot unnail	I cannot be unnailing you cannot be unnailing he cannot be unnailing we cannot be unnailing you cannot be unnailing they cannot be unnailing
Perfect	V-ing perfect
I cannot have unnailed you cannot have unnailed he cannot have unnailed we cannot have unnailed you cannot have unnailed they cannot have unnailed	I cannot have been unnailing you cannot have been unnailing he cannot have been unnailing we cannot have been unnailing you cannot have been unnailing they cannot have been unnailing

Interrogative form

Simple form	V-ing form
can I unnail? can you unnail? can he unnail? can we unnail? can you unnail? can they unnail?	can I be unnailing? can you be unnailing? can he be unnailing? can we be unnailing? can you be unnailing? can they be unnailing?
Perfect	V-ing perfect
can I have unnailed? can you have unnailed? can he have unnailed? can we have unnailed? can you have unnailed? can they have unnailed?	can I have been unnailing? can you have been unnailing? can he have been unnailing? can we have been unnailing? can you have been unnailing? can they have been unnailing?

Interro-negative form

Simple form	V-ing form
can I not unnail? can you not unnail? can he not unnail? can we not unnail? can you not unnail? can they not unnail?	can I not be unnailing? can you not be unnailing? can he not be unnailing? can we not be unnailing? can you not be unnailing? can they not be unnailing?
Perfect	V-ing perfect
can I not have unnailed? can you not have unnailed? can he not have unnailed? can we not have unnailed? can you not have unnailed? can they not have unnailed?	can I not have been unnailing? can you not have been unnailing? can he not have been unnailing? can we not have been unnailing? can you not have been unnailing? can they not have been unnailing?